Grinding-machine.



N0. 805,156. PATENTED NOV. 21, 1905.

F. RODZONOWSKI.

v GRINDING MACHINE. APPLICATION FILED JULY 13. 1005.

2 SHEETS-SHEET L PATENTED NOV. 21, 1905.

F. RODZONOWSKI.

GRINDING MACHINE.

APPLICATION FILED JULY 13.1905.

2 SHEETSSHEET 2.

UNITED STATES PATENT OFFICE.

GRINDING-MACHINE.

Specification of Letters Patent.

Patented Nov. 21, 1905.

Application filed July 13, 1905. Serial No; 269,552.

To all whom, it may concern:

Be it known that I, FRANK RoDzoNowsKr, a citizen of the United States, residing at Ohicago, county of Oook, and State of Illinois, have invented certain new and useful Improvements in Grinding-Machines, of which the following, when taken in connection with the drawings accompanying and forming a part hereof, is a full and complete specification sufficient to enable those skilled in the art to which it pertains to understand, make, and use the same.

The object of this invention is to obtain a grinding-machine by means of which a large number of reaping or mowing machine knives may at the same time be ground, and a machine which will require but little attention in its operation.

I have illustrated my invention by the drawings referred to, in which- Figure 1 isa top plan view of a construction embodying the invention. Fig. 2 is a side elevation of the machine illustrated in Fig. 1. Fig. 8 is a side elevation of a modification of the construction illustrated in Figs. 1 and 2. Fig. 4 is a side elevation, on an enlarged scale, of one end of the grinding-wheel shaft of the machine; and Fig. 5 is an end elevation of such grinding-wheel shaft.

A reference-letter applied to designate a given partis used to indicate such part throughout the several figures of the drawings wherever the same appears.

A is the grinding-wheel of the machine, and may be an ordinary grindstone.

B, Figsl and 2, is a shaft rotatably mounted in boxes 6 b on frame X. i

Grinding-wheel A is rigidly secured on shaft B. Shaft'B, in addition to rotating freely in boxes 6 b, may be readily moved longitudinally therein, thereby bringing the grindingwheel A adjacent to one and the other side of the frame X..

G is the driving-wheel of shaft B, and in the construction illustrated in Figs. 1 and 2 sEch driving-wheel is rigidly secured to such s aft.

D is a driving-belt extending over the driving-wheel C and over a rotating drum, the length whereof is suflicient to permit the determined longitudinal movement of shaft B and consequent side movement of the belt D.

E is a belt-guide, serving to maintain belt D on driving-wheel O as such Wheel is moved from side to side by the longitudinal movement of the shaft B.

To obtain the longitudinal movement of shaft B, I provide crank-shaft F, rotatably mounted in boxes f f, and connect such crankshaft to the shaftB, as by the connecting-rod H and the sliding block I or by the mechanism illustrated in Fig. 8 and hereinafter described. Sliding block 1, Figs. 1 and 2, is mounted on tracks J. The shaft B is provided with the enlarged end K, rigidly secured to the shaft, to rotate between the plates 7, z' of head I, and c" designates bolts holding plates J21 together. The belt-guide E is secured to or. made integral with the block I to move therewith.

L is a table on which the knives M M to be ground by this machine are placed. N N are vertical rods secured in table M, on which rods such knives may be registered, the holes in such knives being provided before the knives are placed on this machine for the bolts used to secure such knives to the reciprocating blades of a mowing or reaping machine.

To provide for a plurality of knives being placed on each set of the rods N N, table L is mounted (by mechanism about to be described) so as to be slowly raised or lowered in the operation of the machine, and to provide for inequalities on the periphery of the grinding-wheelA means are provided for horizontal movement of the table L to conform to such inequalities.

O is a rotatable shaft mounted in boxes O O, and P P are beveled wheels provided with gear-teeth mounted on shaft O to turn therewith, but longitudinally movable thereon.

Q is a handle'by means of which the frame B, Fig. 1, may be moved. Frame R engages with the beveled wheels P P, as by means of fingers r r, and as the frame R is moved to one side or the other one or the other of the beveled wheels P P is moved, so that the teeth thereon intermesh with the gear-teeth on beveled wheel S. Beveled wheel S is rigidly secured to shaft F to turn therewith, and hence rotation of shaft O in one or the other direction, as desired, is obtained by causing beveled wheel P or P to intermesh with bevv eled wheel S.

T T are beveled Wheels on shaft O, arranged to intermesh with beveled wheels t t, which are rigidly secured to vertical shaft U. Vertical shafts U are screw-threaded and are rotatably mounted in boxes u a.

V is a table mounted on the vertical screwthreaded shafts U V, so that as such shafts turn in one direction the table V is raised,

and when they are turned in the other direction such table is lowered.

W IV are abutments secured to table V, and WV W are springs placed between the edge of the table L and the abutments IV WV, respectively.

Table L is movable on the table V, and when the knives M M are mounted on such table L substantially as illustrated in Figs. 1 and 2 the springs IV IV force the edge of the knives adjacent to the grinding-wheel A against such grinding-wheel, and the rotation of the wheel grinds such edges. The upward and downward movement of the tableV produces, of course, corresponding upward and downward movement of table L and knives M mounted thereon. By the upward and downward movement of the knives thus provided for the forward and backward motion of the table L, with the knives thereon, (permitted by the resiliency of springs IV WVQ) and by the side motion of the grinding-wheel A, as described, a very effective and uniform grinding of the edges of the knives M M is obtained on this machine.

It will be observed by inspection of Fig. 1 that the knives M M are arranged in pairs, so that when the knives mounted on one set of rods N N are ground on one edge thereof they may be taken from such rods and placed on the next adjacent set of such rods, and thereby the other side of the knives are brought into contact with the grinding-wheel A to be ground.

In the modified construction illustrated in Figs. 3, 4c, and 5 the rocking bar I is substituted for the sliding head I shown in Figs. 1 and 2, with the connecting-rod I-I attached, as by the pivot h, rocking lever I, as by the pivot 7i; and the upper end of rocking lever I is connected to the plates 21 r: by means of the connecting-rod H and pivots 72/ 72,. R0- tation of the shaft F (shown in broken lines in Fig. 3) produces longitudinal movement of the shaft B. Another variation of construction in this modification consists in making one end of the driving-shaft B manysided (as, say, a hexagon in cross-section) as illustrated in Figs. 8, 4:, and 5 at B, and making a hole in the driving-wheel A corresponding therewith, so that as the shaft B moves longitudinally the driving-wheel A may be held stationary, as by the guide E, although the shaft B is turned thereby. In this modification the driving-pulley G is placed on the rotatable shaft 0 (which is parallel with the shaft 13,) in place of the driving-wheel G, which is placed on shaft F at right angles to shaft B in the construction illustrated in Figs. 1 and 2. In this modification (illustrated in Fig. 3) therefore the shaft F is driven by the teeth of beveled wheel P, intermeshing with the teeth of beveled wheel S. In this construction the belt 1 is driven, by means of any of the well-known mechanisms employed therefor, alternately .in one or the other direction to obtain the opposite movement required in the screW-th readed vertical shafts U U to produce the alternate upward and downward movement of tables L and V, which is obtained in the construction illustrated in Figs. 1 and 2 by the alternately intermeshing of the teeth of beveled wheels P P with the teeth of beveled wheel S. Alternate rotation of the shaft F in one or the other direction is not injurious and produces no different action on lever 1, connectingrod H, and shaft B, while by placing the driving-wheel G on shaft I avoid the necessity of placing a counter-shaft at right angles to the remainder of the shafting of the mill or grinding-room in which the machine is placed. It is evident that the driving-wheel Gr (shown in Fig. 3)may be placed on shaftO of the construction illustrated in Figs. 1 and 2, and wheel G and P removed, if desired, and likewise that the lever-I, with its several connections, can be substituted for the sliding block I in the construction illustrated in Figs. 1 and 2 and the remainder of the construction illustrated in such figures remain unchanged, if desired.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination with arotatable and longitudinally movable shaft and a grindingwheel rigidly secured to the shaft, of means to rotate the shaft, means to move the shaft longitudinall y, a vertically and horizontally movable table, means to secure knives on the table, means to move the table vertically, and means to move the table horizontally to continuously maintain the edges of the knives which are adjacent to the periphery of the grindingwheel in contact therewith; substantially as described.

2. The combination with a rotatable and longitudinally-movable shaft and a grindingwheel rigidly secured to'the shaft, of means to rotate the shaft, means to move the shaft longitudinally, a vertically-movable table, atable mounted on the first-named table to move horizontally thereon, means to move the firstnamed table vertically, means to move the second-named table horizontally on the firstnamed table, means to secure knives on the second-named table with one of the edges thereof adjacent to the periphery of the grinding-wheel; substantially as described.

3. The combination with a rotatable and longitudinally movable shaft and a grindingwheel rigidly secured to the shaft, of means to rotate the shaft, means to move the shaft longitudinally, vertical screw-threaded shafts, a table mounted on the vertical shafts, a table mounted on the first-named table to move horizontally thereon, means to rotate the vertical screw-threaded shafts to move the firstnamed table vertically, means to secure knives shafts, a table mounted on the vertical shafts,

a table mounted on the first-named table to move horizontally thereon, means to rotate the vertical screw-threaded shafts to move the first-named table vertically, means to secure knives on the second-named table with one of the edges thereof adjacent to the grinding-wheel, and means to move the secondnamed table horizontally on the first-named table to continuously maintain the edges of the knives which are adjacent to the periphery of the grinding-wheel in contact therewith; substantially as described.

5. The combination with a rotatable and longitudinally -movable shaft and a grindingwheel rigidly secured to the shaft, of means to rotate the shaft, vertical screw threaded shafts, a crank-shaft, nonrotatable plates connected to the first-named shaft, a connection between the crank-shaft and the non-rotatable plates, an additional shaft provided with beveled wheels having gear-teeth thereon, beveled wheels on the crank-shaft and on the shafts provided respectively with gearteeth intermeshing with the gear-teeth on the first-named beveled wheels on the additional shaft, a table mounted on the vertical shafts, a table mounted on the first-named table to move horizontally thereon, means to secure knives on the second-named table with one of the edges thereof adjacent to the grindingwheel, and means to move the second-named table horizontally on the first-named table to continuously maintain the edges of the knives which are adjacent to the periphery of the grinding-wheel in contact therewith; substantially as described.

FRANK RODZONOWSKI. In presence of I. J. GHILESKI, OHARLEs TURNER BROWN. 

